Welcome to our store！</br> 1、Expanding the flywheel speed yet changes more smoothly, a great accessory for cyclists. 2、Can relieve the spring tension of the rear derailleur to enhance the bicycles climbing ability. 3、Professional manufacturing for stable performance and high reliability, has long service life. 4、Suitable for 8‑speed, 9‑speed, 10‑speed, 11‑speed, 12‑speed large flywheel tooth upgrade. 5、Made of high quality aluminium alloy, CNC accuracy machining, strong and durable, easy to install. <p class="wang-edit-text"><p class="wang-edit-text"> <p class="wang-edit-text"> Item Type: Rear Derailleur Hanger Extension&nbsp; Material: Aluminium Alloy Screw Material:&nbsp;Aluminium Alloy Process: CNC accuracy machining, aluminum alloy anodizing surface Size: Approx. 4.5cm/1.8in ID: Approx. 1.6cm/0.6in Fitment: For the 8-speed, 9-speed, 10-speed, 11-speed, 12-speed large flywheel tooth upgrade <style> .wang-edit-text{ font-family:'Arial' !important; } .wang-edit-text table { border-top: 1px solid #000; border-left: 1px solid #000; } .wang-edit-text table td, .wang-edit-text table th { border-bottom: 1px solid #000; border-right: 1px solid #000; padding: 3px 5px; } .wang-edit-text table th { text-align: center; }</style> 1 x&nbsp;Bicycle Rear Derailleur Hanger Extension1 x Screw Satisfaction - Our customers are our top priority. If you find any product problems after receiving the goods, such as damage and incorrect quantity of goods, please contact the seller immediately. We try our best to provide you with satisfactoryaftersalesservice</br>